Lab 3 Synthesis And Analysis

Once in the program Element and C was selected under the Builder Window, then center of the View1: New window was clicked to make a CH4 molecule appear.

The purpose of this experiment was to synthesize the Grignard reagent, phenyl magnesium bromide, and then use the manufactured Grignard reagent to synthesize the alcohol, triphenylmethanol, by reacting with benzophenone and protonation by H3O+. The triphenylmethanol was purified by recrystallization. The melting point, Infrared Spectroscopy, 13C NMR, and 1H NMR were used to characterize and confirm the recrystallized substance was triphenylmethanol.

The compound aquapentaamminecobalt(III) Nitrate, [Co(NH3)5OH2] NO3, is a metal complex bonded to the molecule nitrate to attain a neutral charge. The synthesis of this molecule is a more complex one, requiring the recrystallization of an intermediate species. When the complex has been formed and isolated via filtration, the complex can be reacted with various aqueous solutions, one being dimethyl sulfoxide, C2H6OS. When reacted these reagents form the compound Co(NH3)5(OS(CH3)2)3+, H2O, and NO3-, though not inn this ratio. Specifically the aquapentaamminecobalt(III) molecule can be used to study the sixth coordination site on the molecule where the later is bound. Because of the weaker bond between the cobalt ion and the water

2. Using the atom and bond library below, construct the following molecule. It may be

Organometallic compounds, such as Grignard reagents, are molecules containing carbon-metal bonds and are often used to create new carbon-carbon bonds. Grignard reagents—or organomagnesims— are specifically those that have a carbon-magnesium bond.

8. ISBN: 0-558-05245-2 Virtual ChemLab: General Chemistry, Student Lab Manual/Workbook, V. 2.5, Third Edition, by Brian F. Woodfield and

- The C-H bonds in this structure are shown at 1444 and 1368cm-1. These two bands indicate the two different types of C-H bends that occur on the molecule. One is that of the alkene and the other is that of the several alkanes on the molecule.

This lab could have contained errors. The errors could have happened when performing the lab. Some of the possible errors in this lab are:

In this laboratory experiment a synthesis was performed through several separate steps. The purpose of the experiment was to synthesize tetraphenylcyclopentadienone from benzaldehyde and to run reactions on carbonyl containing compounds. There was a total of three steps that led up to the synthesis of the final product, tetraphenylcyclopentadienone. The first step of the experiment was the condensation of benzaldehyde to yield benzoin. Thiamine catalyst along with water and ethanol were added to the benzaldehyde, then NaOH was added until the solution turned yellow. After recrystallization, the product was benzoin. Step two was the oxidation of benzoin to benzil.

After putting the CH2Cl2 to a beaker containing the drying agent anhydrous sodium sulfate, a sticky white solid was recovered.

Through the use of the Grignard reaction, a carbon-carbon bond was formed, thereby resulting in the formation of triphenylmethanol from phenyl magnesium bromide and benzophenone. A recrystallization was performed to purify the Grignard product by dissolving the product in methanol. From here, a melting point range of 147.0 °C to 150.8 °C was obtained. The purified product yielded an IR spectrum with major peaks of 3471.82 cm-1, 3060.90 cm-1, 1597.38 cm-1, and 1489.64 cm-1, which helped to testify whether the identity of the product matched the expected triphenylmethanol. The identity of the product being correct was further confirmed by way of both proton and carbon-13 NMR spectra. This is due to the fact

The purpose of this lab was to synthesize triphenylmethanol from benzophenone and bromobenzene by the formation of a Grignard compound with the reagents bromobenzene and magnesium metal. The bromobenzene was first transformed into the Grignard compound and was then reacted with the benzophenone to make the final product. The mixture was then mixed with sulfuric acid and the organic layer was extracted via a separatory funnel. The mixture was then recrystallized from methanol and was allowed to dry and the percent yield, melting point, and the IR was obtained. The mass of the product obtained was 5.45 grams and the percentage yield was determined to be 41.95%. The melting point range obtained from the final product was 89-91°C

Timberlake, K. C. (01/2014). Chemistry: An Introduction to General, Organic, and Biological Chemistry, 12th Edition.

For the identification of the product, IR, 13C NMR and 1H NMR spectra were examined, and the product was found to be butyl propionate. In the IR spectrum, RM-11-Bi, five key peaks are observed. These peaks are sp3 hybridized carbons at 2961 cm-1 and 2877 cm-1, an ester at 1737 cm-1, a

Molybdenum is a chemical element with symbol Mo and atomic number 42. The name is from Neo-Latin molybdenum, from Ancient Greek Μόλυβδος molybdos, meaning lead, since its ores were confused with lead ores. The mass number is 95.94, number of neutrons is 54, the electron configuration is [Kr]4d⁵5s¹.